JPH05154105A - Eyesight examining device - Google Patents

Abstract

PURPOSE:To provide the eyesight examining device by which a testee can examine his own eyesight easily at home, and also, by himself at any time. CONSTITUTION:The device is provided with a monitor screen 3 for displaying an eyesight examination index, a remote controller 2 provided with transmitting switches 11-14 for transmitting an answer signal to a screen displayed by this monitor screen 3, a correct/erroneous deciding means 7b for deciding whether the answer signal from this remote controller 2 is correct or erroneous, a buzzer 6 for informing a false/erroneous result decided by this correct/erroneous deciding means 7b to a testee, and an illuminance sensor 5 for detecting brightness of an atmosphere. Also, this device is constituted of a light controlling means 7b for adjusting brightness of the screen of the monitor screen 3 in accordance with brightness detected by this illuminance sensor 5, a storage means 7c for storing a result of examination, a comparing means 7b for comparing a tendency of a result of the previous examination and a result of the present examination, and the buzzer 6 for informing abnormality at the time when its difference calculated by this comparing means 7b exceeds a prescribed value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a visual acuity test apparatus in which one examinee can perform his own visual acuity test at home at any time.

[0002]

2. Description of the Related Art As a conventional visual acuity test apparatus, a doctor or a person equivalent to a doctor directs a visual acuity test index to a subject and judges whether or not the subject can correctly recognize the visual acuity test. It is known to do so.

[0003]

According to the prior art, the subject cannot perform his own visual acuity test alone, and it is expensive to install the visual acuity test device in the home. There was a problem that there is.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to easily carry out the visual acuity at home in a single person. An object of the present invention is to provide a visual acuity test device that can perform a test.

[0005]

In order to solve the above problems, the present invention comprises a display means for displaying a visual acuity test index and a transmission switch for transmitting a response signal to the screen displayed by the display means. The remote controller, the correctness determination means for determining whether the response signal from the remote controller is correct or not, and the notification means for notifying the subject of the correctness determination result determined by the correctness determination means.

Further, it is preferable to include an illuminance detecting means for detecting the brightness of the atmosphere and a dimmer means for adjusting the brightness of the screen of the display means according to the brightness detected by the illuminance detecting means. Further, a storage means for storing the inspection result, a comparing means for comparing the tendency of the inspection result up to the previous time and the present inspection result, and an abnormality notifying an abnormality when the difference calculated by the comparing means is a predetermined value or more. Notification means may be provided.

[0007]

The visual acuity test index is displayed in consideration of the distance between the display means and the subject, and the visual acuity test is performed by the operation of the remote controller by the subject. Further, the brightness of the screen of the display means is adjusted according to the brightness of the atmosphere. Further, the test result is notified to the subject when the difference between the test result of this time and the test result of the previous time is a predetermined value or more.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a visual acuity test apparatus according to the present invention, FIG. 2 is a flowchart of a visual acuity test, and FIG.
Is a flow chart for determining whether the visual acuity test is correct.

The visual acuity test apparatus comprises a test apparatus main body 1 and a remote controller 2 for transmitting a response signal to the test apparatus main body 1 by light or radio waves.

The inspection apparatus main body 1 includes a monitor screen 3 which is a display means for displaying a Landolt ring which is a visual acuity test index.
The receiving unit 4 that receives the response signal from the remote controller 2, the illuminance sensor 5 that is the illuminance detecting unit that detects the brightness of the atmosphere, and the tendency of the inspection results up to the previous time and the inspection result of this time are compared and the difference therebetween. Is composed of a buzzer 6 which is an abnormality notifying means for notifying an abnormality when is greater than or equal to a predetermined value, a control section 7 which controls the display content of the monitor screen 3 from the response signal received by the receiving section 4 and the like, and a switch section 8. ing.

The control unit 7 has an input circuit 7a having a function of shaping the waveforms of the input signals from the various input devices 4, 5, 8 and correcting the voltage level to a predetermined level and converting an analog signal into a digital signal. , Central processing unit (CPU)
7b and R for storing various calculation programs executed by the CPU 7b and predetermined image display (Landolt ring for visual acuity test and other far / myopia inspection and astigmatism inspection marks)
It is composed of a storage means 7c including a RAM for storing the OM and the calculation result, and an output circuit 7d for outputting a drive signal to the monitor screen 3 and the buzzer 6.

In this way, the CPU 7b is previously stored in the storage means 7c.
A correctness determination means for determining whether the response signal from the remote controller 2 is correct based on various calculation programs stored in the (ROM) or a predetermined image display, and the monitor screen 3 according to the brightness detected by the illuminance sensor 5. It is provided with a light control means for adjusting the brightness of the screen and a comparison means for comparing the tendency of the inspection result up to the previous time and the inspection result of this time.

Further, the remote controller 2 looks at the switching push button switch (SW) 10 for switching the screen displayed on the monitor screen 3 and the Landolt ring 3a displayed on the monitor screen 3 by the subject, and then, Up / Down / Left / Right transmission push button switches (SW) 11 and 12 for determining whether the Landolt ring 3a is facing left or right and transmitting a response signal to the inspection apparatus body 1. , 13, 14
And a control unit 15 for processing response signals from the switching push button SW10 and the up / down / left / right transmission push buttons SW11, 12, 13, and 14, and a signal from the control unit 15. 1 for transmitting the data to the receiving unit 4 of the inspection apparatus main body 1
And 6 are provided. When the push buttons SW11, 12, 13, 14 for up / down / left / right transmission are pushed, light or radio waves having a signal corresponding to each push button SW for transmission is transmitted from the transmission section 16.

The control unit 15 shapes the waveforms of the input signals from the various push buttons SW, corrects the voltage level to a predetermined level, converts an analog signal into a digital signal, and the like, and a central processing unit. Device (CPU) 1
5b, ROM storing various calculation programs executed by the CPU 15b, and RA storing calculation results
It is composed of a memory 15c composed of M and an output circuit 15d for outputting a transmission signal to the transmission section 16.

The operation of the visual acuity test apparatus according to the present invention having the above structure will be described with reference to the flow charts shown in FIGS. First, in the flowchart shown in FIG. 2, the subject uses the switch unit 8 to identify his or her own ID.
(Identification number) is input (S1), and the visual acuity test start switch (SW) is turned on (S2).

Next, the display size N (for example, N = 0.5) of the Landolt ring at the start of the examination and the distance L between the subject and the monitor 3 are input. The content C of the counter is C =
The content S of 0 and the addition total are automatically initialized to S = 0 (S3). The size of the display of the Landolt ring N
Can be changed according to the distance L between the subject and the monitor screen 3. For example, when the examinee sits on the toilet bowl in the toilet room, the test apparatus body 1 is installed on the wall facing the examinee, and the visual acuity test is performed while the examinee is sitting on the toilet bowl. This is because it is possible to cope with the case where the distance L between the subject and the subject is short.

Then, a Landolt ring (size = N, direction = random) is displayed on the monitor screen 3 (S4). Here, the brightness of the screen of the monitor screen 3 is adjusted by the dimming means 7b in accordance with the brightness of the atmosphere detected by the illuminance sensor 5.

Then, the examinee looks at the Landolt ring displayed on the monitor screen 3, determines whether the Landolt ring is facing up, down, left, or right, and determines whether the Landolt ring is facing up.・ Bottom / Left / Right push button SW1
Send push button SW of 1, 12, 13, or 14
To send a response signal to the inspection apparatus body 1 (S
5). Here, the response time from when the Landolt ring is displayed on the monitor screen 3 to when the subject responds is also measured, and the length of this response time is compared with the normal response time of the self to refer to the degree of fatigue. Can be

Then, in the control section 7 of the inspection apparatus main body 1,
It is determined whether or not the response signal of the subject is the correct answer (S6), and if the answer is correct, the buzzer 6 emits the correct answer buzzer sound "pip" (S).
7). On the other hand, if there is a mistake, the buzzer 6 makes a mistake buzzer sound "beep beep" (S14).

In step S8, it is judged whether the size N of the Landolt ring displayed on the monitor screen 3 is equal to 2.0 or smaller than 2.0. If N = 2.0,
Normally, it is not necessary to carry out a visual acuity test any more, so the buzzer 6 emits an end buzzer sound "peep" (S10). On the other hand, N
If <2.0, in order to reduce the size N of the Landolt ring in steps of 0.1, set N = N + 0.1 (S
9) and proceeds to step S4.

In step S11, a maximum visual acuity display N = 2.0 is displayed on the monitor screen 3 as a result of the visual acuity test, and after the inspection data is stocked (S12), the visual acuity test is started S.
The W is turned off (S13), and the visual acuity test ends.

In step S15, the content C of the counter is set to C = C + 1. In the next step, it is determined whether the content C of the counter is equal to 3 or smaller than 3 (S16), and if C = 3, the buzzer 6 issues an end buzzer sound "beep" (S10). On the other hand, if N <3, after the content S of the addition sum is set to S = S + N (S1
7), in order to increase the size N of the Landolt's ring in steps of 0.1, set N = N-0.1 (S9), and step S
Go to 4.

In step S19, the average value S / 3 of three times is calculated on the monitor screen 3 as a result of the visual acuity test, the test data is stocked (S12), and the visual acuity test start switch is turned off (S13). , The visual acuity test ends.

FIG. 3 is a flow chart showing the correctness of the visual acuity test, which is the detailed contents of steps S4 to S6 of the flow chart shown in FIG. First, the direction of the Landolt ring is
Up, down, left or right 4 directions, up 1
The downward direction corresponds to 2, the left direction corresponds to 3, and the right direction corresponds to 4.
A natural number of 4 is randomly generated (S4).

When 1 occurs (S31), the Landolt ring is displayed on the monitor screen 3 with the direction upward (S32), and the signal corresponding to the upward direction of the received signal X is A (S33). It is determined whether or not the subject has pressed the upper transmission button 11 for transmitting the signal A (S34). If the push button SW11 for upper transmission is pressed, the answer is correct (S3
5) If the push button SW11 for upper transmission has not been pressed, it is determined as an error (S36).

When 2 occurs (S37), the Landolt ring is displayed on the monitor screen 3 with the direction downward (S38), and the signal corresponding to the downward direction of the received signal X is set to B (S39), It is determined whether the subject has pressed the lower transmission push button SW12 for transmitting the B signal (S40).
If the push button SW12 for lower transmission is pressed, the answer is correct (S
35), it is determined that the lower transmission push button SW12 is not pressed (S36).

When 3 occurs (S41), the Landolt ring is displayed on the monitor screen 3 with the direction leftward (S42), and the signal corresponding to the leftward direction of the received signal X is C (S43), It is determined whether or not the subject has pressed the left transmission push button SW13 for transmitting the C signal (S44).
If the push button SW13 for left transmission is pressed, the answer is correct (S
35), it is determined that the left transmission push button SW13 is not pressed (S36).

When 4 occurs (S45), the Landolt ring is displayed on the monitor screen 3 with the direction rightward (S46), and the signal corresponding to the rightward direction of the received signal X is D (S47). It is determined whether or not the subject has pressed the right transmission push button SW14 for transmitting the D signal (S48).
If the right transmission push button SW14 is pressed, it is regarded as the correct answer (S
35), it is determined that the right transmission push button SW14 is not pressed (S36).

It should be noted that the direction of the Landolt ring is 4
It is also possible to add four diagonal directions, such as diagonally upper right, to eight directions. In this case, for example, if the direction of the Landolt ring is the upper right direction, the subject pushes the push button SW for upper transmission.
11 and the right transmission push button SW14 may be pressed at the same time.

FIG. 4 is a plan view showing various push buttons SW arranged on the remote controller 20 in another embodiment. Reference numerals 21 and 22 denote a start push button SW and an end push button SW, which are used when starting or ending the visual acuity test. 23, 24, and 25 are pushbuttons SW for selecting the one to be inspected from the visual acuity test, the far / myopia test, and the astigmatism test. The pushbutton SW for the visual acuity test, the far / myopia test push button SW, and the astigmatism test, respectively. The push button SW.

Reference numeral 26 is a push button SW consisting of eight for allowing the subject to respond in the direction of the Landolt ring (FIG. 5) displayed on the monitor screen 3 in the visual acuity test. The direction of the arrow shown on each push button corresponds to the direction of the Landolt ring.

Numerals 27, 28 and 29 are push buttons SW used in the far / myopia inspection, which are black inspection marks (in the same pattern as the marks displayed on the left and right sides of the monitor screen 3 in red and green areas and shown on the push buttons). 6) for responding to.

Reference numeral 30 is a push button SW used in the astigmatism examination, and the numbers 1 to 6 are represented. These push buttons SW30 are numbered from 1 to 6 on a plurality of radially extending straight line groups displayed on the monitor screen 3 (FIG. 7), while the subject is assigned to other straight line groups. On the other hand, it is for responding by selecting the number of the straight line group which is considered to have different shades.

[0034]

As described above, according to the present invention, a visual acuity test can be easily performed at home at any time by one person, which is very significant in terms of preventive medicine. In addition, it is easy to judge whether the visual acuity is deteriorated or the eyes are overused from the tendency of the change in visual acuity, which is useful for physical condition management.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a visual acuity test device according to the present invention.

[Fig. 2] Flow chart of visual acuity test

FIG. 3 is a flowchart showing whether or not a visual acuity test is correct.

FIG. 4 is a plan view showing various push buttons SW arranged on a remote controller in another embodiment.

FIG. 5 is a diagram showing a Landolt ring displayed on a monitor screen.

FIG. 6 is a view showing an inspection mark displayed on a monitor screen in a far / myopia inspection.

FIG. 7 is a diagram showing inspection marks displayed on a monitor screen in an astigmatism inspection.

[Explanation of symbols]

1 ... Inspection device main body, 2, 20 ... Remote controller,
3 ... Monitor screen (display means), 4 ... Receiving part, 5 ... Illuminance sensor (illuminance detecting means), 6 ... Buzzer (notifying means, abnormality notifying means), 7b ... CPU (correction / judgment means, dimming means, comparison means) ), 7c ... Storage means, 11, 12, 13, 14 ...
Top / bottom / left / right transmission push button switch (transmission switch), 16 ... Transmission section.

Claims (3)

[Claims] 1. A remote controller having display means for displaying a visual acuity test index and the like, a transmission switch for transmitting a response signal to a screen displayed by the display means, and a response signal from the remote controller. A visual acuity test apparatus comprising: a correctness / incorrectness determining means for determining correctness / incorrectness; and an informing means for informing a subject of a correctness / incorrectness result determined by the correctness / incorrectness determining means. 2. An illuminance detection means for detecting the brightness of an atmosphere, and a light control means for adjusting the brightness of the screen of the display means according to the brightness detected by the illuminance detection means. The visual acuity test device described. 3. A storage means for storing the inspection result, a comparing means for comparing the tendency of the inspection result up to the previous time and the inspection result of this time, and an abnormality when the difference calculated by the comparing means is a predetermined value or more. The visual acuity test apparatus according to claim 1 or 2, further comprising an abnormality notifying means for notifying the user.